Blue Milk - Full Short Story

Chapter 1

Rin nervously tapped her hoof against the hardened plastic floor as she watched the Earth Caste senior flick through holo-screens, too engaged in what he was doing to notice her. She wore a form-fitting body glove over her slender body, different to the flowing robes that she was used to, and she picked at it occasionally as the silence stretched on.

"Por… Por’saal Rin’he,” the earth caste senior said, finally looking up from his screens. He let out a long, deep hmmm, and made the gesture of respectful meeting with his hands.

“Fio’ul,” Rin said, making the gesture of deep respect to a superior. “I am here as ordered.”

“As the Gue’la would say, you drew the short straw, eh?” The senior said, grinning. “I am Fio Kais’noh, so please call me Kais’noh, to put yourself at ease. This project you have brought to me has great promise.”

Rin bowed her head happily. The project was helmed by one of her seniors, Por’ui Vio’na, a renowned envoy to the Gue’la, but it felt good to share a portion of the credit. Rin was to be the first test subject for Vio’na’s project, and, if she was successful, many more would follow.

“Whilst their kind are still largely a mystery to us, I have been cross-sectioning one of our Gue’vesa volunteers, who has been most helpful. Their biology is somewhat similar to ours, with similar reproductive organs, but different hormonal and cellular balances.” Kais’noh finally found the holo-screen he was looking for, and he displayed an in-depth biological scan of one of the Gue’la, or humans, as the species called themselves.

Kais’noh began to side-track into an in-depth analysis of the Gue’la form, and Rin found her mind wandering. Her eyes drifted around the lab, which was filled with various forms of delicate equipment, and large metal bulkheads. One wall was made entirely out of thick, reinforced plastek, and revealed the vista of space beyond. Kais’noh was so engrossed in his description that he didn’t notice her wandering eyes, and so, after another quarter-dec, Rin had to gently guide him back on track. “Back to the project?” she prompted.

“Ah, yes,” Kais’noh rumbled. Rin reflected that had he been any good at speaking or marshalling his thoughts, he would have been in the water caste. “As Por’ui Vio’na noted, the Gue’la have a fascination with the act of mating, and indeed, the very concept of it. Physiologically speaking, the Gue’la brain releases chemicals that stimulate a state of euphoria when they… get in heat, as it were. Based on this, and my other findings, Vio’na is correct that they can be controlled somewhat through this biological imperative.”

“How strange,” Rin said. T’au males and females didn’t take any pleasure in mating, but rather did so out of a sense of the Tau’va, or the Greater Good, as more T’au meant more warriors, ambassadors, pilots, and engineers.

“The physiological data is quite interesting, but we may only learn so much through a sterile observation. We need more data so as to construct further goals,” Kais’noh said. “I suggest an interview with our subject Gue’vesa.”

Kais’noh walked over to a wall and tapped a holo-button next to it. The wall that Rin had mistaken for solid metal dissolved, turning to a clear plastek window to an interview chamber. Beyond, a Gue’la — human, Rin corrected herself — lounged on a chair at a small table, hands interlaced behind his head. He was Gue’vesa, or human friend, as he had sided with the T’au and their cause many Tau’cyr ago.

“Can he see us?” Rin asked, walking over. The human made no reaction, so she assumed not. “Fascinating. I have only ever seen them from a distance.” She was far too junior to spend much time with the esteemed envoy Vio’na, but she had observed recordings of negotiations, and found the humans to be intensely alien, and more than a little interesting.

“Why did the envoy assign you to this project, Por’saal Rin’he?” Kais’noh asked bluntly.

“Rin, please,” Rin said, as she felt her cheeks glow a deeper blue from shame. “I am far too junior in Vio’na’s staff to be of notice. She mentioned this project in passing, and so it is not… of priority.”

Kais’noh let out a long hmmmm, and Rin feared that she had insulted him, by insinuating that the low priority meant that his skills were undervalued.

“I understand,” Kais’noh said eventually. “But as this project shows promise, I will do my best. For the Greater Good.” “For the Greater Good,” Rin echoed.

Chapter 2

Norro used a boot knife to pick the dirt from under his fingernails as he waited. Normally when it came to volunteering, Norro was at the back of the line, but when the blues had promised a full kai’rotaa of rest and relaxation for his troubles — near two Terran months — he reasoned that it couldn’t be too bad. Norro was in his early thirties, but despite his relatively young age, he reckoned that he had seen more war than any man ought to in this galaxy. Though the Blues had a cause that was worth fighting for, he still grew tired of the fighting.

The solitary door to his room opened, and he saw a female Blue walk shyly in. She was perhaps his height at just shy of six-foot, with the customary flat face and flat body of her people. His eyes roamed her body, stopping at her chest, where the female had barely a bulge under her skin-tight bodysuit. Her feet were hoofed, showing her bovine heritage, but the rest of her was not so different from the human form. He supposed that below their skin they had different organs, but he wasn’t a biologist.

“Greeting, Gue’vesa,” the female said in passable High Gothic, bowing and making one of her species’ hand gestures.

“The name’s Norro Talos,” Norro said, standing up. He recognised one of the Water Caste, so he didn’t salute, like he would for one of the Fire Caste, but instead stood at parade rest with his hands clasped behind his back. Might as well make a good impression, he reasoned.

“I am Por’saal Rin’he,” Rin said, “but you may call me Rin.”

“Well, Rin, I’m here as ordered. I take it from the scans you’ve got most of what you need?” Norro asked. He had been subject to more prodding and poking by the male Blue than was comfortable, and it had been topped off by a series of lengthy scans, focussing on his head.

“We need you for a series of interviews next, Nor’ro,” Rin said, trying to pronounce the human name. “We have a project that could benefit from your insight. For as long as you assist us, you will be free from your duties to the Fre Caste, and you will still serve the Greater Good.”

“And the time off afterward,” Norro said quickly.

“Of course. A kai’rotaa of rest absent from your standard duties, to follow your time assisting us, not run concurrently with.”

Norro grinned in reply, and he fell silent. He waited patiently, and when the Blue understood what he was waiting for, her cheeks flushed a deeper shade of blue and she gestured to the chair. “Please, Nor’ro,” she said, gesturing madly with her hands.

“I don’t speak Blue hands,” Norro said, “and it’s Norro, not Nor’ro.” He saw the look of panic on Rin’s face, and he softened slightly; he had to remember he wasn’t dealing with soldiers here. He sat and tried to smile reassuringly. “It’s fine.”

The female took a moment to compose herself, then she sat opposite him at the small table.

“Norro,” she said, trying the name out. “My apologies.”

“What is this project?” Norro asked, ignoring the pleasantries. “And I’m happy to help, as long as we can dispense with those medical checks. I’ve had enough of that male one.”

Rin tapped something on her arm, and Norro saw a small pinprick of light in her left iris. He’d been around Blues long enough to know a thing or two about their tech, and supposed it was a personal computer of some sort linked to her eye, displaying things only she could see.

“It is in its early stages. For now, can you please answer a series of questions? I have some prepared by my associate.” Norro nodded, and the female cleared her throat.

“What do you find attractive about your females?” She asked.

Norro narrowed his eyes. “What’s this about?”

“Please just answer the question.”

Norro thought for a moment. It was a strange question, but easy enough to answer. He thought of the small pamphlets handed around by his fellow soldiers, dog-eared and grimy, and he smiled to himself. “Big tits, first of all.”

Rin mouthed to herself for a moment, undoubtedly taking notes with her optic technology. “What are ‘tits’?” She asked.

Norro burst out laughing. He began with a gesture, then went into deep detail, running the full list of size, shape, and appropriate perkiness. When he’d finished, he saw that the Blue’s face was completely perplexed.

“These are the mammaries used to nurse your young?” Rin asked. “Fascinating. Perhaps the size is linked to the amount of milk able to be nursed to human children? Does this influence attraction?”

Norro didn’t know how to reply to that. He just shrugged. “I just like ‘em is all. How do you not know this? You’ve dealt with humans plenty.”

“While we have done extensive research on Gue’la culture, we look to it like outsiders. Popular artwork from many worlds depict the mammary glands as representative of innocence, or so our scholars believed. Perhaps we have not spoken to the right Gue’vesa. Or perhaps we have just not listened enough.”

Norro shrugged. Most would be reluctant to talk about such things among the prim and proper Water Caste. Norro was just too tired of it all to care. He was about to say something else, but what happened next had his jaw hanging open.

Rin stood, then reached up to the nape of her neck. She undid a clasp and pulled her bodysuit down to her waist. She had tiny breasts, mere pinpricks with deep blue areolas on them. The T’au had long since evolved to feed their young with a nutrient-rich paste, removing the need for such organs.

“Do you find these arousing?” She asked.

Norro tried to speak, but he couldn’t manage a single word. He coughed, then shrugged, aware that he was blushing. “Some might. I like ‘em bigger.”

Rin nodded, mouthing to herself again, taking more notes. “I have never been more intrigued,” she said breathlessly. “And are all humans like this?”

“Men? Yeah, most of ‘em. Some ladies too.”

Rin placed her hands over her chest as if thinking to herself, and Norro felt a pang in his gut to see them go. He had been fighting for years, and the women he served with were treated just like a man - even in the showers he averted his eyes, like he would for any of his brothers. It just felt wrong.

He felt he hadn’t seen a proper naked woman in a lifetime.

“You have given me much to think about,” Rin said, nodded her head low as thanks.

Chapter 3

Rin stood back in the lab with Kais’noh, staring into the empty room beyond the view screen. She had spoken with the human for several more rai’korr before dressing and excusing herself, with the human sent back to his quarters for a sleep cycle.

“The interview provides intriguing data, but not enough to be verified,” Kais’noh replied, making the hand gesture of the skeptical scholar. “It is odd that the Gue’la hold so much stock in mammary glands. They are mere functional organs. They do not appear, at first glance, to have much to do with the mating process. Merely raising their young.”

“Why they do anything is a mystery,” Rin replied, making the gesture of the student. The study of xenobiology was common to all castes, as the Gue’la presented a very real threat – or, as some saw it, opportunity – in the galaxy. However, this did not mean that Rin made a good study of it.

“It is troubling you should say such a thing, being a diplomat, no?”

“I would be ashamed to deny my ignorance on anything,” Rin replied. “How else would I learn?”

Kais’noh nodded approvingly. “We shall alter you before the next interview,” he said definitively.

“Alter?”

“Mammaries may be enhanced by hormonal injections and time spent in the rejuvenation tanks,” Kais’noh said. “We may increase their size several times over. We will postpone the next interview by several rotaa until we have completed your transformation.” Rin stepped back a little. “I did not anticipate…”

“Upon your entrance to the room, the subject’s retinas landed on your chest for several rai’kaan longer than the rest of you. Further, I have analysed its response to the removal of your bodysuit. The subject’s heart rate increased dramatically, and an analysis of its retinal movement shows a twenty-five percent improvement in attention, even after you redressed.”

Rin’s mouth opened wide in surprise. A twenty-five percent improvement in attention? The possible ramifications for such a discovery were enormous; if a simple medical procedure could improve attention even further, then it more than warranted her pushing the boundaries as far as she could. It might mean the difference between the Gue’la leaders accepting an offer of communication or rejecting it. That could determine the fate of entire worlds. It was beyond anything that she, or Vio’na, had thought.

“The Nor’ro did not seem to understand our hand language,” Rin said. “The Gue’la clearly hold other forms of communication in higher regard. Perhaps by altering our outward appearances, we may speak a kind of language of their own.”

“Indeed. Additional tests under differing conditions will bear useful data. We have a saying in the Earth Caste - ‘data is the lifeblood of science’. I do not need to tell you that the data gathered in our first test is exceedingly promising.”

Rin nodded, resigned, but Kais’noh continued. “After perusing the guidelines of the proposal from the honoured Vio’na, it is clear that this experiment was designed as low-priority, hence the relatively low-rank of those assigned to it: namely, us. To see if we can connect with the Gue’la on an instinctual, or physiological, level, and improve their receptivity to negotiations with our kind.”

“Any advantage would help. I have seen recordings of their hatred to anything that is not Gue’la,” Rin replied.

Kais’noh nodded sagely, and Rin sighed. Such data that they had gathered was more than enough to warrant her pushing the boundaries and getting the injections. She gestured to Kais’noh, and the Earth Caste senior began excitedly performing a series of full-body scans, then more focussed scans on her chest. She saw a large holo-image projected next to her, displaying everything from her nerves to her organs and bones, like an anatomy diagram.

Rin shuddered at seeing herself in such a way; it felt unnatural. But it was for the Greater Good, and she could bear any burden for that.

After the scans, Kais’noh spent some time formulating the correct chemical required for the transformation, then used equipment that Rin couldn’t even begin to try to name to formulate it. It took several decs, far less than she had anticipated, and during that time she reviewed the notes she had made during the interview. Her personal data system projected a holo screen directly onto her retinas, overlaying menus and text over what she saw in the room.

The data system was bonded to her nervous system, and allowed her to navigate the menus with hand gestures, that to a primitive species may have looked like she was trying to swat away flies.

Now that Kais’noh had revealed his own findings, she saw the specimen’s expression had changed when she had disrobed. It was fascinating. It amazed her that they had uncovered such an important aspect of the Gue’la psyche so quickly. It made her wonder that if they continued this line of research, what else may they find?

She was interrupted by a surprisingly delicate hand and, following its instructions, she disrobed once more. Kais’noh was gentle, and swabbed Rin’s skin with an antiseptic and numbing cream, so the hormonal injections weren’t painful. After that, she spent several long rotaa floating in a rejuvenation tank, half conscious, watching the lights cycle between day and night as time passed. It was like being half asleep, and a new experience for her, for few T’au did anything to warrant time in the tanks, besides the Fire Caste.

When at last Kais’noh finally drained the water from the tank and Rin was deposited, coughing and spluttering on the floor, her body felt strange. She could immediately feel the change to her chest, and as she straightened she felt unbalanced at the sudden weight. She had to grab at her engorged mammaries in fascination; they were several times the size, large enough that they barely fit in her hands.

T’au had long since changed their genetic makeup to reduce the size of their breasts, as their children were fed with a synthetic milk, and there were numerous benefits to having a uniformity in shape between the sexes. Rin realised, as she manipulated the fleshy orbs, that she may well be the most well-endowed T’au in the last dozen generations. But it wasn’t only her chest that had changed.

Kais’noh approached and proffered a white towel to Rin. “It seemed the hormonal injection had more effect than anticipated,” he said. He examined Rin closely, circling her and muttering to himself. “The hormones have increased the width of your hips, likely in anticipation for childbirth, and your body has stored extra fat on your buttocks and thighs to prepare to feed the child in your womb. I had thought the localised nature of them would focus on the chest region, however I was mistaken.”

Rin scowled at Kais’noh. “You didn’t anticipate this?”

“Perhaps I was too hasty in my determination to proceed,” Kais’noh admitted. “But this may not be a negative outcome. We will treat the new attributes as variables, and see if they provide new data. While it is true that the added fat deposits are an undesirable trait to our people, we cannot discount what the Gue’la determine appealing. Remember, they find mammaries enticing.”

Rin had to agree with that assessment. Kais’noh busied himself in providing her with a new bodysuit (as it was clear that her previous one would no longer fit) and she tried to grow accustomed to her changed body. She found that with her larger thighs and buttocks, she swayed more as she moved, and of course, each step created issues of bouncing.

Her ‘tits’, as the human had called them, were very soft and malleable, and while they were not sagging yet from gravity, having been recently grown, they bounced up and down quite easily, as though they had a mind of their own. As she walked, she found that she had to take hold of them to keep them steady.

When Kais’noh returned with a modified suit, she managed to clasp it up only with difficulty, and felt somewhat ridiculous in her body. Kais’noh then activated the viewing screen for the adjacent examination room once more, and Rin saw Norro where he had been the last time they had met. Unlike before, however, the specimen was sitting at attention.

“Interesting,” Kais’noh said, “perhaps the effect of displaying your body was greater than we anticipated. The recordings show—” he paused to review them, “that he has been glancing at that door intermittently for several decs.”

Rin made a note about the behaviour with mounting excitement. If they could improve upon this behaviour then the benefits were countless. Rin knew that sitting down with Gue’la… ‘human’... nobles was an arduous — and often fruitless — endeavour, but if they could get the humans to just listen to the creed of the Tau’va… well, it would make her suffering now a worthwhile sacrifice.

“Please record to the best of your ability,” Rin said, and she determinedly stepped up to the door.

Chapter 4

Norro had spent seven years fighting for the Fire Caste, often against men and women that he would have once called his brothers and sisters. When you held a pulse rifle against an Ork it was one thing, but against another human hurt the soul. Before that, he was in the Astra Militarum, used as cheap flesh for the meat grinder of the Imperium; before that, he was an underhiver, barely scrounging a living from the mutant rodents and trash that filled the streets.

But he hadn’t felt such a sense of anticipation in all his time storming buildings or marching on battlefields. What did the Blues have in store for him today? He reflected on his last examination – he had thought of little else in the days since – and wondered if the female would take more clothes off this time.

He licked his lips in anticipation. But whatever he was expecting could not possibly have prepared him for when the doors hissed open. The female Blue, and it looked like the same female as far as he could tell from their facial features, stepped in. She had undergone some kind of enormous change to her body, something he had never seen before. Her blue form now boasted large breasts covered by her tight bodysuit, clearly outlining hard nipples beneath the fabric, and she seemed to have newfound curves that quickly took the eye and refused to let it go.

Norro had barely ever looked at another woman with lust, not when there were so many other things to worry about. He knew enough about what men generally found attractive, and to describe it to the female Blue, but he had never had the time to think about it past that. He had always thought he would die somewhere on some battlefield, with no children and no wife to mourn him. But this… this spoke to a primal instinct he had thought long lost.

Norro stood quickly, his heart racing in his chest. The Emperor didn’t make human women like that. The women he had fought with, and against, he didn’t really see as women at all. They were like brothers, as sexual as the average tree. This Blue, though… “Thank you for returning for another discussion, Nor’ro,” the female said, making a hand gesture that Norro vaguely recognised as a sign of respect. Her hooves, natural for xenos of her kind, clopped as she demurely made her way to the table in the centre of the room. She seemed to be moving awkwardly. “Please, sit.”

Norro struggled to find his seat again, ignoring the annoying pronunciation of his name, and the Blue walked over to the other side of the table and sat down. He racked his brains, trying to think hard, and remembered her name: Rin.

“Let us begin. Do you find the changes that I have made to be visually appealing?” Rin asked.

Norro nodded quickly.

“Very good. Should I leave, would you feel a strong desire to see me again?”

“I’d kill a hundred Orks for it,” Norro replied. He was delighted to see the female blush deeply.

“Do you feel a strong desire to mate with me?” She asked.

Norro coughed and spluttered. For a soldier of many years, this was a significant achievement.

“Mate?” He asked.

“Engage in the act of mating, or procreation.”

“Well, yeah,” he admitted. “It wouldn’t be for procreation, ‘cause I don’t see how a human and a Blue… T’au, I mean… could procreate. But I’d sure as hell have fun trying.”

The female seemed to be excited, and she leaned forward and laced her fingers in front of her on the table, pressing her breasts together nicely.

“The act of mating is pleasurable to you, even when it doesn’t result in the making of a child?” She asked. Norro saw the female’s eyes move rapidly and assumed she was reading or logging data in her retinal implant.

“Don’t T’au do it… just for fun?” Norro asked.

“T’au mating is engaged with the purpose of procreation,” Rin explained. “Usually, the male penetrates the female and immediately ejaculates his reproductive fluids. With advances in genetic technology, this process is nearly one-hundred percent effective. The process takes a rai’kan, perhaps, no longer, and it is not unpleasant. Once insemination is completed, the male returns to his duties and the female begins the long process of pregnancy.”

Norro shrunk back at hearing the process described so clinically. So the Blues are one-pump-chumps, eh? He thought. The thought gave him a grin, and he saw the female looking perplexed at him.

“Humans do it different. We… penetrate… over and over again, and it feels damn good,” Norro said. “We do it for fun, not just procreation. And we do it just about anywhere, and often as much as we can.”

“Anywhere, as in, different geographical locations? Does the location of the act change the nature of the act?” Rin asked. Norro laughed. “Anywhere as in… any hole. The females of our species can be very accommodating, if they are persuaded well enough.”

A look of understanding crossed Rin’s face, and she nodded and seemed to make more notes. After a few moments, she stood, and Norro looked at her expectantly.

As she had the last time they had met, she reached up and unclasped her body suit, and brought it down her body. This time, she bared enormous blue breasts, perfectly shaped and amazingly perky, like she had undergone the finest of rejuvenation treatments. The hue of her skin was a gradient of blues, moving from dark blue around her nipples to a slightly lighter blue the further away it got.

Rin’s nipples were hard and thick enough that Norro could have rolled them between his fingers nicely. He had perused some of the drawings and crude pics that circulated his astra militarum unit, and could say with certainty that the T’au was far more well-endowed than many of them.

When the bodysuit was hanging off her hips, Rin used her hands to grab her own breasts, and held them from the underside as if offering them to Norro.

“Would you consider yourself to be more or less engaged with the conversation when I am disrobed?” Rin asked, gazing directly into his eyes.

“More,” Norro murmured. He felt the pants on his crotch grow tight, and the Blue’s eyes alighted on him.

“Fascinating,” she murmured. “A physical reaction to my undressing.” She took the bodysuit and began to pull it further down, revealing bare thighs and a tight, glistening slit between. It was entirely hairless, and slightly smaller and more demure than that of a human woman, but presumably, if they birthed from there, then it was big enough.

Norro let out a long breath and leaned back. It struck him, then, that he had never made a better decision than volunteering for this duty.

“If we were to try mating, would it improve your engagement with this conversation, and increase your desire to see me again?” Rin asked.

Norro nodded slowly.

“Then please show me how you mate,” she said, blushing again.

Chapter 5

The interview room was kept at a perfect temperature, but Rin felt frustrated that her nipples remained hard anyway. She seemed to constantly find new changes to her body; her breasts were a little sore, her nipples hard, and her genitals were wet in anticipation for penetration. In short, her primitive ancestors would say that she was ‘in heat’.

The Gue'la had a large grin on his face, but when Rin mentioned the prospect of mating, his eyes opened even wider, and he almost looked frightened. She had gained very valuable data, but the act of mating, however distasteful she may find it, would be far more enlightening. It may not serve as a negotiation technique in itself, but it would shed important light on areas of the human psyche that the T’au had not yet delved into.

“Show you how I… what?” He asked.

A second frustration Rin had was for the Gue’la language. High Gothic, as they called it, was not entirely difficult to learn, but it was very harsh and primitive. She often found herself wondering if she was using the correct terms.

“Mate… to mate?” She tried. “The process of impregnating a female?” Surely this being had knowledge of how to continue the genetic line of his species. It should be hardwired into the very code of his being.

Nor'ro nodded slowly. “How would you like to do it?” He asked.

“Can you show me?” She repeated. She wondered why the human was suddenly having difficulty in understanding basic concepts. Was sexual arousal impeding his brain function? She resolved to test that hypothesis at a later time.

“Well, if you could… kneel down,” he said awkwardly. He gestured in front of him. Rin knelt between his legs, having to crane her neck to look up to see his face. He was fumbling with the belt buckle on his pants, and so she helpfully assisted him, until he had freed himself from the confines of his clothes.

Rin was astonished to see such a large phallus in front of her. T’au males were quite small, for the insemination process was very efficient and did not require deep penetration, but the Gue’la had evolved to be quite a large size. She pulled up notes of T’au physical anatomy and analysed the man’s organ before her. But before she could do a thorough analysis, he had taken her head and was pushing her face toward him.

“I do not understand,” Rin said, confused, resisting his efforts.

“You need to suck it. To put it in your mouth,” Nor'ro replied. He was pushing quite forcefully, so Rin shrugged, opened her mouth, and allowed him entry. He filled her mouth, and she easily took him down her throat, allowing him to push her until her lips were pushed to the base of his testicles.

“By the Throne, you took it all in!” He groaned, holding her tightly.

Rin tried to talk through a full mouth, but only succeeded in muffled gurgling, along the lines of “gan ‘uma femashe not?” She made notes that this method of mating would prove detrimental to the negotiation process, for there was no way the human could possibly understand her garbled words. She sat with him in her throat for a few dec’taa, waiting to see what he would do, then when his grip on her head relaxed she pulled herself off him, spit drooling down her chin.

“Do humans often mate with their mouths?” She asked curiously.

“They do when they want to please,” Nor'ro said. His face was relaxed, and his breath ragged, and Rin hypothesised that the human’s brain was flooding with pleasing chemicals. “How did you take all my cock in one go?”

“Can humans not do so?” Rin asked, repeating her earlier gargled question. She noted the use of the term ‘cock’ to describe his mating organ, and assumed it was a colloquial term.

“They can… I think. But it takes a lot of practice.”

“I see. Likely due to a physiological difference in the throat.” Rin made to stand, but the Gue’la took her face again, and brought her in to his crotch once more. Again, Rin allowed the human entrance, and brought him all the way in. She had to be careful not to harm him with her teeth, which were more square and heavy than that of a human’s, but the technique was fairly simple.

Rin had expected to be kept with Nor’ro’s organ — or, cock — in her throat, as that seemed to satisfy him, but he forcibly moved Rin’s head so that her lips were brought back to the tip, then down again, only for it to be repeated over and over. She assumed that this provided a stimulation to the nerve endings in the organ, and so she gripped his thighs and began to move her own head.

She found that she could look up at the Gue’la’s face from her position, and she began to test his reaction to different motions with her technique; different stroke lengths, speeds, and movements of her tongue. The human reacted with moans, groans, and intakes of breath, and from this, Rin was able to determine the most efficient method of mouth-mating.

“How do you do that… with your tongue?” Nor’ro gasped.

Rin paused for a moment, confused, then finally understood. T’au tongues were winder and longer than humans, and far more dexterous. She was able to lick along his length as she moved her lips, and provide stimulation to the majority of his shaft. Rin tried to answer but the human didn’t seem to need any, and he pushed her back down and to work again.

Rin picked up speed, intent on her work, and continued for a while until Nor'ro gripped her head hard and skewered her back down. She tried to move but he held her in pace and then… what was that? Rin’s eyes widened as she felt something shoot down her throat, and she swallowed it reflexively. It was a sticky, thick, warm liquid that seemed to coat the inside of her throat.

The man spurted the liquid out in great quantities, before relaxing his grip, a sign that he was finished.

Rin pulled her head back, her lips forming a seal that kept her saliva and the strange juices in her mouth, not wanting to spill them on the clean floor. As she sat back on her knees, she swirled the liquid around in her mouth. It had a familiar taste to it, and she realised that it was similar to the broth that came in the regular field rations that were so common in their society.

These field rations were a common part of the T’au diet in all walks of life, not just the Fire Caste. It took great time and effort to properly farm and regulate produce to meet the rigorous standards for safe consumption, and for those on the frontier of the T’au Empire beyond what the Gue’la called the Damocles Gulf, it was far simpler to enjoy the rations that were mass-produced and frozen.

Rin swallowed the liquid and savoured the taste. “Delicious,” she said.

The man appeared to be in a state of euphoria after relieving himself, and so Rin excused herself with a bow and retreated from the room to Kais’noh, carrying her body-suit in her off-hand. As she saw the Earth Caste Senior, she realised that she should have kept some of the human’s fluid as a sample for analysis, and she made the gesture of shame in folly.

“Apologies, Kais’noh, for swallowing a key sample,” she said.

Kais’noh made the gesture of folly dismissed. “The Gue’la creates the fluids in a sack that contain an aspect of its primary genitalia, and they will be soon replenished. It is these fluids that it uses to inseminate its females. After you knelt before it, I took the liberty of cross-referencing scans to ensure that they would not be disagreeable to your digestion – or, as was possible, poisonous.”

Rin blushed in shame; she had been so intent on collecting data, and so surprised by the familiar taste of the human’s fluids, that she had not even thought about the potential for poison.

“It was extraordinary, Kais’noh, the fluids tasted of our field rations! It took me by surprise.”

Kais’noh let out a low hmmmmm in reply. “This may explain why the humans are so reluctant to eat our foods, though it is perfectly nutritious; we were forced to develop a secondary ration system for them with different flavours. I have analysed the Gue’la response to stimulus and have made some interesting findings.”

The Earth Caste Senior brought up a holo-screen of data, and highlighted several key areas. “Upon revealing your mammaries, the test subject’s attention increased by a factor of eighty-seven percent. The Gue’la appears to have significant nerve endings in its primary genitalia, and from its reaction while you were suckling at it, it seems you stimulated them very well. Once it relieved itself, it became far more complacent and docile.”

“So we can conclude that sexual stimulation, and further gratification, is a useful negotiation technique?” Rin said, excitedly. “We need to continue tests with this Gue’la, and then bring in others to verify our findings. In addition, I would like to see how negotiations could be conducted following an encounter of mating. If the Gue’la is more agreeable, it could mean that mating becomes standard practice before discussing terms. This could be an outlying case, after all. We will give the Gue’la a single dec to recover, and we will try again.”

Rin nodded quickly. “Thank you, Fio’ul,” she said, bowing deeply. “You have been instrumental in this research. I think it is time to inform Vio’na.”

“Agreed.”

Rin excused herself and padded over to a side-chamber, which contained a single rest area with a metal-lined cot, ablutions cubicle, and nothing more. The Water Caste liked to surround themselves with memories of the worlds they had visited and the people they had spoken with; some had artwork, some figurines or knick-knacks, but all had some personal effects. Kais’noh’s laboratory had none of these things — it was clear that he used this room for rest and nothing else, which spoke volumes to his character.

Rin sat on the edge of the cot and calmed her nerves for a moment. When she was collected, she blinked twice to activate her retinal recorder and cleared her throat.

“Por’ui Vio’na,” she began respectfully. She thought for a moment, organising her mind, then began the long process of listing their findings, making sure to note that they were still in the process of researching, and that it was all yet to be confirmed. She tried to keep the excitement out of her voice but failed miserably; this was the single greatest thing that would ever happen to her. It was possible that entire generations of female envoys would know her name as the one who had mastered the arts of communication with the Gue’la.

She ended the call by noting that, of the estimated hundreds of thousands worlds that the Gue’la Imperium commanded, she believed that her new techniques could turn many over to their side.

“We just need them to listen,” she said finally, “and, through the process of reversible genetic body modification, and possible sexual stimulation, we can indeed accomplish this.”

She blinked twice to end the recording, and with a small gesture sent it to Vio’na. It wouldn’t go straight to her, of course; the transmission would be logged, bundled with numerous others, and transmitted in one single packet across space to the system that the envoy now occupied. This might take some time, but Rin and Kais’noh still had much to investigate.

Instead of resting for the remainder of the dec, she began her own research while thinking of her next moves. There was so much to test for, and she wanted to do it all now, for it was so important that not a single dec could be wasted.

Finally, she returned to Kais’noh, who was busy typing research notes.

“May we resume?” Rin asked.

“The Gue’la appears to be becoming agitated,” Kais’noh replied, not taking his eyes off his notes. “You may return to him. There is no need to dress yourself again.”

Rin nodded and walked to the door, fully nude. Again, the bouncing of her mammaries was somewhat annoying to her, and her nipples were incredibly hard. She stretched a little, limbering up her muscles, trying to ignore her discomfort. She would have to decide how to conduct the next experiment, and she wanted to make sure she was properly flexible.

Chapter 6

Norro relaxed back in his chair, hands laced behind his head, boots up on the table. The only thing that could make this day better was a couple of lho sticks to smoke and a pair of fellow guardsmen to tell about it.

Former guardsmen, he corrected himself. He sometimes still felt that he was in service to the Emperor, even though it had been years since he had defected.

His smile slipped as he thought about that, and he crossed his arms over his chest instead. He was about to stand up when the door opened again. The Blue, Rin, was back, and this time she was nude from the get-go.

Norro grinned widely. “Welcome back,” he said.

“May I sit, Nor’ro?” The female asked, gesturing to the free chair. Norro nodded, and the Blue swayed over and sat, crossed-arms supporting her breasts.

“They are very weighty,” she said with a shy smile, noticing his stare. “I don’t know how Gue’la females deal with them this large. They would make physical activities very difficult.”

“Depends on the activity,” Norro replied. “It makes some better. Though not all women are so… well-endowed.”

“Some have them smaller?” Rin asked.

“They come in all sizes. This is just my preference,” he replied.

“I see. May we conduct another test, Nor’ro?” Rin asked.

Norro was already unbuckling his belt once more. “I thought you’d never ask,” he said breathlessly.

This time, instead of kneeling before him, the Blue stood in front of where he sat, not kneeling as he had expected. When Norro had freed himself once more, he gestured down, but the female shook her head.

“This time I would like to try another method,” she said. Norro was about to ask what she meant when she suddenly mounted him, sitting astride his lap, which brought her breasts in line with his face.

“Oof,” Norro muttered, unable to help himself.

“I am sorry, did I harm you?” Rin asked, pulling back and looking at him with concern.

Norro simply took her by the shoulders and brought her in close again, pressing her enormous breasts to his face. They felt smooth, soft, and he used his hands to cup them as he breathed in the Blue’s scent. He could smell a heady, female odour that told him that she was ready and waiting for him to enter her.

She seemed confused about the process, and when Norro pulled his face out of the canyon of her breasts, she smiled awkwardly at him. “I understand that the proper mating process involves insertion into the female genitalia,” she said. “Do my breasts play a more important part that I am not aware of?”

Norro responded by grabbing the female by her large hips and raising her up to the tip of his cock. He balanced her there for a moment, searching, before he found the hot, moist entrance. He let her go, and she slowly descended, spearing herself on his hard cock. In his experiece, human women might only take a portion of him in at a time, gradually getting themselves used to his length and girth. This T’au seemed to have no such difficulties.

Norro groaned as the Blue took him all the way in, and ended up seated with him inside. By the Throne; wet muscles suckled at his cock, as though trying to bring him in further, though he had no more to give. She was incredibly tight, as though unused to such a size within her, and yet had no difficulty in accepting him. He hadn’t experienced anything like it; she was trying to milk him dry without even moving.

“What is this?” Norro asked breathlessly. “How…?”

“Is the suction unpleasant?” Rin asked. “I can feel myself drawing you in.”

“It’s… amazing,” Norro moaned. “How do you do it?”

“T’au are evolved to be highly efficient when it comes to breeding,” the Blue explained. “We must draw the male sperm out, and into our womb where it will fertilise our eggs and impregnate us. This results in a natural suction process made by expanding and contracting muscles. Every T’au female understands this. I am glad you enjoy it.”

Norro didn’t want the T’au to move at all; it was like an experienced masseuse was working him with hot, oily hands, slowly stroking and massaging him with an erotic intensity. The female seemed to be trying to control her emotions, and placed a hand over her mouth to stifle a moan.

Norro could see now why the males lasted only one stroke.

He felt himself on the verge of finishing, even without Rin moving once, and he grasped at the T’au’s breasts and scrunched his eyes closed as he exploded within her. The T’au moaned a little as his seed shot forth in enormous quantities, filling her insides. It was good that she could not be impregnated by a human, because if it was possible, it would have happened.

“By the Emperor,” Norro panted. He abandoned her breasts and gripped at her hips, holding her tightly. He began to rock her backward and forward, and the feeling of sliding in and out of her wet cunt nearly finished him a second time.

He managed to hold on, and he continued the motion until the T’au got the hint and began riding him properly, holding him by the shoulders and using her legs to bounce up and down, back and forth, atop him.

He could see a white gooey liquid seeping from her lower lips, but strangely enough, that wasn’t the only place. He stopped her and looked quizzically at her breasts. The hard nipples were quivering and letting loose small drops of milk, which dribbled down her blue skin in white rivers.

“What?” Norro asked simply. Rin looked embarrassed, and covered her chest with one arm. Her breasts were too large, and so they ballooned outward above and below her arm, and she quickly dismounted and stood, white sperm leaking down her thighs.

“Please excuse me,” she said quickly, turning and hurrying out the door.

Norro looked down, where, despite finishing within the female Blue, he was still hard as an arbites cudgel.

“Shit.”

Chapter 7

“What is this?” Rin asked in a panic, gesturing at her breasts. Kais’noh bent to examine them, letting out his familiar long, low hmmmmm. He grabbed one in one hand, and Rin winced. For some reason they were very tender, and though she was not yet used to them, she felt as though they were bigger, almost swollen.

“Have you mated with anyone yet? As in, before this experiment. To produce offspring for the Tau’va,” Kais’noh said.

“I am too young, and my work has been very important to me,” Rin said defensively. Her superior, Vio’na, had mated multiple times and produced several sets of twins, which was one of the reasons she was so well-respected. Rin had no way of matching such a feat, as Vio’na was many tau’cyr older than her, and females were not able to serve while pregnant.

“T’au females seldom produce milk when pregnant or afterward, but occasionally it may happen,” Kais’noh mused. “This is merely discarded, as the nutrient supplements we provide our young are suited for their growth, though interesting studies do note the benefits of such natural milk… chemically, it is quite remarkable, and nearly impossible to reproduce artificially. There are currently many experiments suited to understand how it may affect both our species and others.”

“Is it… dangerous?” Rin asked. “For me to… leak?”

“It is likely due to both penetration and the fluids absorbed by your genitals. With the newfound hormones we have injected, your body believes it is in a hyper-state of heat, and the penetration just now must have stimulated some biological function. I shall provide a device that will drain the milk from your mammaries, and you may continue as normal.”

Rin felt her cheeks flush and she looked away in shame. The way Kais’noh had spoken, this was something females only experienced rarely, and likely this was far more extreme than they, likely due to her augmentations. She did not want to mate with the Gue’la anymore, not if it meant that her body would continue to betray her like this.

“Give me some time, Rin.” Kais’noh busied himself at a workbench, selecting several pre-fabricated parts and beginning a computerised process for assembling more. He activated a holo-screen and entered perimeters, muttering to himself. After a few moments he asked, conversationally, “you were making noises within the chamber when the Gue’la was inside you. Was the process pleasurable?”

Rin startled for a moment, and remembered that it had indeed felt good. T’au education programs spoke of mating as a logical, sterile process with little concern for feeling or emotions — Rin herself had never experienced it before, so she didn’t expect any difference. However, when the human had been inside her, she could barely contain herself.

She knew that after the genetic injection she had felt wetter between the legs than usual, and she now felt her body aching for another penetration, and wondered if this was what the Gue’la females felt all the time.

“I… yes, it was pleasurable,” Rin said.

“Normally the nerves in T’au genitals are somewhat dulled, but it is possible that the hormones have increased their sensitivity,” Kais’noh said. “However, based on the side-effects, we should put an end to the practice of mating in this fashion while you are in this state.”

Rin nodded slowly, unwilling to let that be an end to the research. As Kais’noh was assembling his device, she suddenly remembered what Nor’ro had said about many kinds of mating, and she had an idea. She used her retinal computer to pull up a diagram on T’au anatomy.

After a few rai’kor, Kais’noh finished his tinkering, and returned to Rin with a device that looked like several small containers attached to a pair of suction cups.

“This will drain your mammaries of milk,” Kais’noh explained. “Once that has been completed, we shall dispose of it and continue our experiments in a different fashion.”

Rin looked at the device uncertainly. Her chest was very sensitive, and she didn’t know if the device would bring with it pain or, as had her earlier penetration, surprising pleasure.

When the process was over, Rin returned to Nor’ro once more, stopping only to pick up a small bottle of water-based lubricant from Kais’noh’s racks of materials. She didn’t like to think too much about what had happened; it had been disturbingly pleasurable to drain herself of milk, and feel the pumps suckling at her breasts like newborn children.

She had produced a startling amount in such a short time, and Kais’noh had no clear explanation, but to note that the ancient, biological imperative of their species was working very quickly within her. Quite annoyingly, he called it fascinating, and said that he would provide it to other Earth Caste more involved with T’au genetic experimentations.

When Rin entered she found that the Gue’la was still half-naked, with his member now soft and still coated with the juices that she produced from between her legs. When he saw her, he began to rise, and Rin watched, fascinated, as it rose to attention once more.

“Can we keep going?” Norro asked quickly.

Rin, who was about to apologise, smiled. “You have my deepest apologies, Nor’ro. I cannot continue mating in the same manner as before. My body… is reacting in ways I do not fully understand.”

Rin’s heart sank as she saw the look on Nor’ro’s face. It fell, as though he had just received word of the death of a dear friend.

“I do have another suggestion, though,” she said. She walked to him, then placed both the small bottle she had taken from Kais’noh, and her palms, flat on the table, bending over and widening her stance. She could feel her rump on proud display, and knew that her cheeks were parted from her stance, bearing both her anus and genitals.

The Gue’la looked on in frozen amazement, before quickly kicking off his boots and his pants, which were around his ankles. He quickly moved behind her, and she felt hands grabbing her cheeks, parting them wide. She blushed furiously.

“We may mate from the rear, now, if that suits?” Rin asked nervously. “Would the Gue’la be disgusted at the request? He had indicated they mated in various places, and though to the T’au it was something incredibly offensive and repulsive, she hoped Nor’ro would take it as a good second prize to using her in the other way. Besides, he had said that a practice in mating among his kind used multiple kinds of “holes”.

“You mean… in the ass?” Nor’ro asked.

“If it pleases you. To do it in the other manner activates biological reflexes that I cannot control.” Rin felt the grip on her cheeks tighten, then felt something brush against her rear entrance.

That confirms that, she thought dryly. “Wait! I brought a bottle of lubricant. If you wouldn’t mind…?”

The Gue’la opened the bottle and spread half of it on himself, and poured the rest on Rin’s behind. It was warm, and not wholly unpleasant, and she felt him touch her once more, and forced herself to relax.

The Gue’la entered her slowly, and Rin bit her lip against the mixture of pain and pleasure that it brought. Nor’ro was very large, but he seemed to instinctively know to go slow, and she appreciated him for that.

She continued to bite her lip, and thought of the Tau’va as the male violated her. It was all worth it for the Greater Good.

Chapter 8

Norro pushed himself in slowly, inch by inch, giving the Blue the time to relax her muscles and prepare for his entry. Her asshole was tight, far more than her wet slit, and had to force his way in hard, like hammering a stake down into the earth to make a fence.

Still, Norro persevered, and he had to pull himself out several times and then return before he managed to make his way all the way in. Once he was, he paused for breath and switched his grip from the Blue’s cheeks to her hips, where he found a good handful of meaty blue flesh to hold onto.

He heard the female moaning softly as he moved, and he smiled to himself and looked down, seeing him fully swallowed up by her ass. There wasn’t the same kind of suction that he’d felt in her other hole, but a different sensation of tightness, and it was one that he enjoyed just as much.

Instead of finishing quickly, Norro took his time, and began to slowly fuck the T’au from behind with deep, sure strokes that elicited a moan each time he buried himself in her anew. He reached out and grabbed the Blue’s braided hair, and pulled it back to wrench her head back. He saw that her eyes were closed and that she was biting her lip, in a cute way that made her seem young and inexperienced. He wondered how old this Rin was – and what kind of experience she had. He realised he knew nothing about her.

He let go of her hip and grabbed one of her large dangling breasts with his other hand, and fondled it roughly as he picked up his pace. Soon he was going at her hard, and she was no longer able to control herself, moaning loudly as he fucked her blue brains out.

He didn’t need to know anything about her. He was a man, and she was a woman… or close enough, at least.

He felt himself explode inside her, but he didn’t stop his intense pace, and he let loose hard enough that it splattered out with each thrust. Finally, after he was finished, he kept himself buried deep within her and straightened her up.

“I’m sorry, did I hurt you?” He asked, panting. He had gone a little overboard, he thought, and he was vaguely aware of some hair-pulling and spanking going on, though he couldn’t be sure.

“I… I…” the Blue didn’t seem able to speak, and was panting heavily, breasts rising and falling as she took great lungfuls in. Finally, she managed, “can you please… remove yourself from me?”

Norro had almost forgotten his position, and he slowly pulled himself out with a muffled slurping noise. With his cock removed, a dribble of white liquid seeped out from between her blue cheeks, and she straightened up, looking embarrassed.

“Did you find that pleasurable, Nor’ro?” She asked, trying to regain her composure.

Norro nodded, and the female thought, and rephrased: “did you find that as pleasurable as using my mouth and genitals?” She sat down, winced, and stood back up again. He felt a pang of guilt that he had so ravaged her big blue ass, but that was tempered by the sheer fun of it all, and so he couldn’t help but grin.

“Each has their merits,” he replied. He thought for a moment, and added, “I might have to sample them all again, just to be sure.”

The blue nodded slowly, and began to question him.

“You enjoy a narcotic item called ‘lho sticks’, correct?”

“Yes,” Norro said, confused.

“These items are in short supply, correct?”

“Yes.”

“If I asked you for a ‘lho stick’, would you now give me one?”

Norro laughed. “I’d give you the whole damn pack.”

“Would you have given me a lho stick prior to mating?” Rin asked. The trick of white had begun to make its way down her thick blue thighs and drip to the floor.

Norro considered this for a moment. Lho sticks were worth their weight in Imperial Credits among his kind. You could buy them on any imperial world, but the T’au refused to procure them for their Gue’vesa troops, citing their unhealthy nature. They had to resort to a black market, trading anything from spare rations to personal trophies for single lho sticks.

“Probably not,” he admitted.

“If I asked you to fight on the frontlines of a battlefield against an Imperial world, would you do so?”

Norro froze. “I do my duty,” he said slowly. “For the Greater Good, right?”

“And would you be less reluctant to do so after a session of mating?”

Norro laughed. Throne, he’d march the Eye of Terror itself if it meant another ‘session’ with this woman.

Chapter 9

Por’ui Vio’na was tall, slim, elegant, and everything Rin wanted to be. She stood in front of the massive view screens set in the heart of the war vessel, looking out over Ye’llorock, as the humans called it: a world with rich, red soil, and sweeping deserts that mingled together to form a yellow crust that could be seen from space.

Spread out across the planet were hundreds of Gue’la cities, each containing millions of their kind; enough to fill a T’au Sept.

Rin approached the envoy and bowed deeply, her tailored-blue robes shifting demurely around her bountiful curves.

“Your research data was quite interesting, Por’saal Rin’he,” Vio’na said, not turning. “It bears very interesting fruit already.”

“It does?” Rin asked, confused.

“Rin’he, this world the humans call ‘Ye’llorock’ has been resistant to the glory of the Tau’va for nearly two tau’cyr. We have been in orbit above them, but we have neither the numbers to seize their cities by force, nor the firepower to burn them off the world. The rulers of Ye’llorock have refused to do more than sit at the table with us, and when they do, they simply praise the grace of their carrion-Emperor.”

She turned and smiled, and Rin saw genuine pleasure on her face. “When I received your research, I ordered our earth-caste engineers to create a serum to change one of our ambassadors to suit the ideals you outlined. Within several rotaa of meeting this ambassador, the humans were listening, actually listening, to what we had to say. They accepted an offer of medical technology, and are outlining demands for the trade of our pulse weaponry. It will not be an easy process, but Ye’llorock will be praising the Greater Good within another tau’cyr.”

Rin made the gesture of joy in work completed, and Vio’na mimicked it, then, of all things, she bowed. She bowed so deeply that she bent nearly in two, and Rin had to step back, shocked. Vio’na was her senior by several ranks, and by many years and many children.

“Rin’he, we will be providing the hormonal injection, and the culmination of your research, to our ambassadors on a dozen worlds. After that, a hundred more. You have done more for the Tau’va than I ever could.”

Rin felt her eyes well with tears and she brushed them away. The praise was beyond anything she could have expected.

Vio’na straightened up. “Rin’he, thanks to you, we usher in a new era. The negotiation between the T’au and the humans will forever be changed. Come to my side, and let us lead our people into the future. For the Tau’va!”

Rin walked forward until she stood by Vio’na’s side. The hard work that she had done had paid off.

“For the Tau’va,” she said, smiling widely.

Finish

The next instalment of the Warhammer 40K: T’au series continues in Imperial Milk. Read on to find out what happens next — and why it may have had more downsides than Por’saal Rin’he could have ever possibly dreamed.